Bug Bites
Mosquito and bed bug bites as well as bee stings and other bug bites may cause itching.
Dry Skin
Dry skin and skin that comes in contact with an irritant such as detergents, jewelry, soaps and cosmetics may also cause skin to itch. This is also known as irritant contact dermatitis.
Eczema
Eczema is an inflammation of the skin causing it to become red, itchy and dry. The most common form of eczema is atopic dermatitis and is found more often in infants, though it can strike at any age. The face, hands, feet, inner elbow and back of the knees are the areas most often affected and may become worse from irritants such as soap, rough clothing, household chemicals, foods, dust mites and other allergy triggers.
Psoriasis
Psoriasis, another chronic skin condition is due to an overactive immune system causing inflamed, thick white, silvery or red patches on the skin. It is not contagious, but is believed to be an inherited condition.